Isosteareth phosphate
Synonyms
Poly(oxy-1,2-ethanediyl), alpha-isostearyl-omega-hydroxy-, phosphate;
Category
Anionic Surfactant
> Phosphate
>> Polyether Phosphate
>>> Alkyl Polyether Phosphate
>>>> Branched Alkyl Polyoxyethylene Ether Phosphate
Chemical Numbering System
CASRN：N/A
EINECS：N/A
Molecular Formula & Molecular Weight
Molecular Formula: N/A
Molecular Weight: N/A
Structure
R: iso-C18; R1: isosteareth group or OH.
Properties
Appearance (1), colorless to pale yellow liquid to paste to solid.
Solubility slightly soluble to soluble in water.
Stability stable. Under strong acid condition, easily hydrolyzed.
Risk Liquid form: corrosion; irritation, irritation to skin, eye.
GHS (Rev.10) label: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent cleansing, emulsifying, dispersing, solubilizing, anticorrosive, antirust, lubricating, antistatic, wetting, permeating abilities. Performance varies with the number of EO. Resistance to high concentration of alkali. Intolerance to hard water. Resistance to high temperature.
Note (1), The by-product 1,4-dioxane is a possible carcinogen. Generally, can be acceptable when concentration of 1,4-dioxane is less than 30ppm or less.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Liquid |
|
|
Actives, %, ≥ |
90.0 |
|
pH (25°C, 1% solution) |
1.0 - 3.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents - Detergents - Testing methods
(2), pH
GB/T 6368 Surface active agents - Determination of pH of aqueous solution - Potentiometric method
ISO 4316 Surface active agents -- Determination of pH of aqueous solutions -- Potentiometric method
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Liquid |
|
|
Heavy metals (as Pb), mg/Kg, ≤ |
20 |
|
As, mg/Kg, ≤ |
3 |
Test Methods
(1), Heavy metals (as Pb)
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30799 The test method of food detergents - Determination of heavy metals
(2), As
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30797 The test method of food detergents - Determination of total arsenic
3, Product standards
(1), Chinese standards
(1a), QB/T 2949 Phosphoric acid ester
4, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
(b), Used in cosmetics, should be test for harmful substances or furtherly test for microorganisms, according to local regulations and standards.
Major Uses
1, Typical applications
Use as cleansing agent.
Use as emulsifying agent, dispersing agent.
Use as anticorrosive agent, antirust agent.
Use as solubilizing agent.
Use as wetting agent, permeating agent.
Use as lubricant.
2, Personal care products
Cleansing agent, emulsifying agent in personal care products.
3, Industrial cleaning agents
Cleansing agent, antirust agent in industrial cleaning.
4, Machinery
Lubricant, antirust agent, cleansing agent in metalworking fluids.
5, Household detergents
Use as cleansing agent.
6, Textile
Wetting agent, permeating agent, cleansing agent, antistatic agent in textile.
Product members
Isosteareth-2 phosphate;
Manufacturers
Update: 20140402(1); 20190325(2);